What is the base ignition timing for this 1988 5.8L calibration?

10° BTDC, set with the transmission in neutral, parking brake set, wheels blocked, engine at normal operating temperature, and the in-line SPOUT connector disconnected.

What spark plug and gap does the VECI label specify?

Spark plug ASF-32C with a gap of .042-.046.

Which oxygen sensor applies to F-Series and Bronco (U150) versus Econoline?

The Exhaust Gas Oxygen Sensor for the F-Series & U150 vehicle line is service number E73Z 9F472-A; the Econoline version is E7TZ 9F472-A.

Can the idle speed or idle mixture be adjusted on this engine?

No. The label states the vehicle is equipped with EEC IV/EFI systems and idle speeds and idle mixtures are not adjustable; it refers to the shop manual for additional information.

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1988 Ford 5.8L Calibration 8-64H-R00 VECI Label & Parts List (E8AE-9C485 AGA)

Ford calibration 8-64H-R00 vacuum routing with VECI label and EEC-IV emissions parts list

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Motorcraft calibration 8-64H-R00 emissions page: VECI underhood label, vacuum-routing diagram and EEC-IV parts list (Thermactor, EGR, MAP, fuel regulators) for F-series/E-series and Econoline applications.

AI caption April 2013 · Photo 810 of 3001

This document is a screenshot from motorcraftservice.com showing Ford calibration 8-64H-R00 for a 1988 model year light-duty truck with a 5.8L engine. The top portion reproduces the Vehicle Emission Control Information (VECI) label, which states the vehicle is equipped with EEC IV/EFI systems with non-adjustable idle speed/mixture, gives a five-step ignition timing procedure (disconnect SPOUT connector, set timing to 10° BTDC at normal operating temperature), lists spark plug ASF-32C gapped at .042-.046, catalyst equipment, calibration code E8AE-9C485 AGA, and emissions equipment code JFM5.8T5HZZ3 - AIP/EGR/EGS/TWC/FI. A vacuum routing schematic shows components including the FPR, EGR, throttle body, MAP sensor, carbon canister, air bypass valve, EVR, TAB/TAD solenoid valves, and vacuum reservoir. Below is a Calibration Parts List table giving name/description and Motorcraft service numbers for 23 emissions and engine-control parts, including thermactor valves and pump, EGR sensor and vacuum regulator, oxygen sensors (F-Series/U150 and Econoline), MAP sensor, fuel pressure regulators, throttle position sensor, distributor, coolant and air charge temperature sensors, and the EEC-IV processor (E8TZ 12A650-ANA). Useful for verifying correct emissions parts and timing specs for this 1988 5.8L calibration.

This document covers 1988, which may differ from this 1994 Ford Bronco.

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Frequently asked questions

What is the base ignition timing for this 1988 5.8L calibration?: 10° BTDC, set with the transmission in neutral, parking brake set, wheels blocked, engine at normal operating temperature, and the in-line SPOUT connector disconnected.
What spark plug and gap does the VECI label specify?: Spark plug ASF-32C with a gap of .042-.046.
What is the service number for the EEC-IV processor and calibrator assembly?: E8TZ 12A650-ANA.
Which oxygen sensor applies to F-Series and Bronco (U150) versus Econoline?: The Exhaust Gas Oxygen Sensor for the F-Series & U150 vehicle line is service number E73Z 9F472-A; the Econoline version is E7TZ 9F472-A.
Can the idle speed or idle mixture be adjusted on this engine?: No. The label states the vehicle is equipped with EEC IV/EFI systems and idle speeds and idle mixtures are not adjustable; it refers to the shop manual for additional information.